Optical module, vehicle lamp and vehicle

Abstract

The utility model provides an optical module, a vehicle lamp and a vehicle. The optical module includes: a light source; the light shielding plate is arranged on the light emitting side, away from the light source, of the light condenser and is located in the middle of the light condensing module in the vertical direction, and a cut-off line forming structure extending in the front-back direction is arranged in the middle of the light shielding plate in the width direction; wherein the cross section of the cut-off line forming structure comprises a first inclined section AB, a horizontal section BC and a second inclined section CD which are sequentially arranged from the middle part to one side and are connected, coordinates of two ends of the horizontal section BC are respectively B (0, 0.57) and C (k, 0.57), and an included angle ABC between the first inclined section AB and the horizontal section BC is 135 degrees; the angle range alpha of the included angle BCD between the second inclined section CD and the horizontal section BC is larger than or equal to 160 degrees and smaller than 180 degrees; wherein k ranges from 2.5 to 3.5.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle lighting, and particularly to an optical module, a vehicle lamp, and a vehicle. Background Art

[0002] Vehicles have become an indispensable means of transportation in today's society, bringing great convenience to people's lives and work. Generally, vehicle lamps need to be installed on vehicles, which can not only facilitate surrounding vehicles and drivers to observe the vehicle in time, playing a warning role, but also enable the driver to observe the road conditions during driving, reducing the occurrence of traffic accidents.

[0003] In the lighting system of an automobile, the high-low beam switching is a basic function in the vehicle lamp system, which can allow the driver to adjust the light intensity and direction under different road conditions to improve the safety of night driving. However, during the high-low beam switching process, there are some problems, such as the uneven transition of light intensity, the incoherence of the connection between high and low beams, etc. These problems may lead to the occurrence of traffic accidents. Summary of the Utility Model

[0004] In order to solve the above problems, the technical solutions adopted in the embodiments of the present application are as follows:

[0005] An optical module, comprising:

[0006] A light source;

[0007] A condenser module, including a condenser surface and a light-emitting surface, the condenser surface is arranged close to the light source; the light-emitting surface is arranged away from the light source and includes a low-beam light-emitting surface and a high-beam light-emitting surface arranged up and down;

[0008] A light-shielding plate, which is arranged on the light-emitting side of the condenser away from the light source and the height is in the middle of the up-down direction of the condenser module. A cut-off line forming structure extending in the front-rear direction is provided in the middle of the width direction of the light-shielding plate;

[0009] Wherein, the cross-section of the cut-off line forming structure includes a first inclined section AB, a horizontal section BC, and a second inclined section CD arranged and connected in sequence from the middle to one side. Taking the center of the light-emitting surface of the condenser module as the origin, the horizontal line passing through the origin as the X-axis, and the vertical line passing through the origin as the Y-axis, the coordinates of both ends of the horizontal section BC are B(0, 0.57) and C(k, 0.57) respectively. The included angle ∠ABC between the first inclined section AB and the horizontal section BC is 135°. The included angle ∠BCD between the second inclined section CD and the horizontal section BC has an angle range α greater than or equal to 160° and less than 180°; wherein, the range of k is 2.5 - 3.5;

[0010] A lens, which is arranged on the side of the light-shielding plate away from the condenser module for collimating the light emitted by the condenser module.

[0011] In some embodiments, the angle α of the included angle ∠BCD between the second inclined section CD and the horizontal section BC is 170°, and k = 3.5.

[0012] In some embodiments, a structure for forming Zone III is integrally formed on the light-emitting surface of the light condensing module, and the structure for forming Zone III is located between the low-beam light-emitting surface and the high-beam light-emitting surface; in the width direction of the optical module, the spatial position of the structure for forming Zone III is substantially the same as the position of the cut-off line forming structure, and the height of the structure for forming Zone III is lower than the height of the cut-off line forming structure.

[0013] In some embodiments, the cut-off line forming structure includes a groove extending in the front-back direction, the opening of the groove faces downward, and the projection of the structure for forming Zone III on the light-emitting surface falls within the projection groove formed by the projection of the groove on the light-emitting surface.

[0014] In some embodiments, the light source includes a low-beam light source and a high-beam light source arranged at intervals up and down, the light condensing module includes a low-beam light condenser and a high-beam light condenser arranged up and down, the low-beam light condenser is disposed in front of the low-beam light source, and the high-beam light condenser is disposed in front of the high-beam light source;

[0015] The structure for forming Zone III is located in the middle and lower part of the low-beam light-emitting surface of the low-beam light condenser, and the Zone III light-emitting surface of the structure for forming Zone III is directly opposite to the rear end of the groove in the front-back direction.

[0016] In some embodiments, the structure for forming Zone III includes a light guide body extending in the front-back direction, the rear end of the light guide body is connected to the low-beam light-emitting surface, and the front end of the light guide body is the Zone III light-emitting surface;

[0017] The Zone III light-emitting surface extends forward and is close to / fits the rear end of the groove, and the distance dimension between the Zone III light-emitting surface and the low-beam light source in the front-back direction is greater than the distance dimension between the low-beam light-emitting surface and the low-beam light source in the front-back direction.

[0018] In some embodiments, the Zone III light-emitting surface of the light guide body is connected to the rear end of the groove, and the extending length direction of the light guide body faces directly forward and is the same as the length direction of the groove.

[0019] In some embodiments, the cross-sectional profile shape of the Zone III light-emitting surface of the light guide body is the same as the cross-sectional shape of the groove.

[0020] In some embodiments, the low-beam light-emitting surface of the low-beam light condenser is behind the high-beam light-emitting surface of the high-beam light condenser, and a stepped plane is formed between the low-beam light-emitting surface and the high-beam light-emitting surface;

[0021] The light guide is laid on the stepped plane, and the distance between the light-emitting surface of the III region and the high-beam light-emitting surface in the front-back direction is less than the distance between the light-emitting surface of the III region and the low-beam light-emitting surface in the front-back direction.

[0022] A vehicle headlight includes the optical module according to any one of the above.

[0023] The present application also discloses a vehicle, including the vehicle headlight described in the foregoing embodiment.

[0024] The present application has the following advantages compared with the prior art:

[0025] (1) It can make the light emitted by the condensing module skim over the groove of the cut-off line forming structure as much as possible, have less contact with the surface of the cut-off line forming structure, or only have its optical path slightly changed by the surface of the second inclined section CD of the cut-off line forming structure at a small angle, so that the light emitted from the condensing module can be effectively utilized to hit the middle area of the lens. There is sufficient brightness at the junction of the middle parts of the high beam and low beam, and there will be no unclear dark area at the junction. Moreover, the light skimming over the groove of the cut-off line forming structure or having its optical path slightly changed by the surface of the second inclined section CD of the cut-off line forming structure will basically continue to be emitted straight ahead. After passing through the front end of the cut-off line forming structure, a distinct contour (low beam cut-off line) will be shown in the middle of the upper edge of the low beam light pattern on the distant screen. The contour line is clear and well-defined. The first inclined section AB is close to the center of the light-emitting surface, and the luminous brightness at the center of the light-emitting surface is relatively large. Therefore, ∠ABC of the first inclined section AB is 135°, and a smaller inclination degree than that of the second inclined section CD is sufficient to ensure sufficient brightness at the center position corresponding to this part on the screen light pattern.

[0026] (2) Moreover, the range of k is between 2.5 and 3.5, that is, the distance between BC is relatively small, and the overall width of the cut-off line forming structure in the left-right direction is relatively small, reducing the spatial volume of the middle area at the junction of the high beam and low beam, which is beneficial to presenting a large light brightness and a clear low beam cut-off line.

[0027] Therefore, the present application can increase the brightness and clarity at the junction of the high beam and low beam. In particular, it can improve the brightness of the middle area of the low beam light pattern, reduce the difference in brightness between the middle part of the low beam light pattern and the middle part of the high beam light pattern, make the intensity transition presented in the middle area of the light more smooth, and make the connection between the high beam and low beam more coherent, thereby improving the safety of night driving.

[0028] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specific preferred embodiments are given below, and detailed descriptions are provided in conjunction with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for the embodiments will be briefly introduced below. It should be understood that the following accompanying drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related accompanying drawings can also be obtained based on these drawings.

[0030] Figure 1 Schematic diagram of the light rays of the existing lighting system;

[0031] Figure 2 Top view of the optical module structure provided by an embodiment of the present application;

[0032] Figure 3 Front view of the optical module structure provided by an embodiment of the present application;

[0033] Figure 4 Cross-sectional structure diagram of the cut-off line forming structure on the light-shielding plate;

[0034] Figure 5 For the light rays passing through Figure 4 Schematic diagram of the cut-off line shape formed at the near and far light connection on the screen after the cut-off line forming structure;

[0035] Figure 6 For the light rays passing through Figure 4 Schematic diagram of the black and white effect at the near and far light connection on the screen after the cut-off line forming structure;

[0036] Figure 7 Cross-sectional structure diagram of the cut-off line forming structure on the light-shielding plate (α is 170°);

[0037] Figure 8 For the light rays passing through Figure 7 Schematic diagram of the cut-off line shape formed at the near and far light connection on the screen after the cut-off line forming structure;

[0038] Figure 9 For the light rays passing through Figure 7 Schematic diagram of the black and white effect at the near and far light connection on the screen after the cut-off line forming structure;

[0039] Figure 10 Optical module structure diagram provided by an embodiment of the present application;

[0040] Figure 11 For Figure 10 Front view after omitting the lens;

[0041] Figure 12 For Figure 10 Structural diagram from another perspective;

[0042] Figure 13Longitudinal sectional optical path diagram for forming the low beam III area light pattern provided by an embodiment of the present application;

[0043] Figure 14 Projection light effect diagram of the low beam light pattern and the low beam III area light pattern provided by an embodiment of the present application;

[0044] In the figure: 1. Light source; 2. Cut-off line forming structure; 3. Translucent component;

[0045] 110. Low beam light source; 120. Low beam condenser; 121. Low beam light output surface;

[0046] 200. Area III forming structure; 210. Light guide body; 211. Area III light output surface;

[0047] 310. High beam light source; 320. High beam condenser; 321. High beam light output surface;

[0048] 400. Step plane;

[0049] 500. Light shield; 510. Cut-off line forming structure;

[0050] 600. Lens. Detailed implementation manners

[0051] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Components of the embodiments of the present application described and illustrated herein can be arranged and designed in various different configurations.

[0052] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0053] It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present application, the terms "first", "second", etc. are only used for differential description and cannot be construed as indicating or implying relative importance.

[0054] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0055] In the description of the present application, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0056] The following will, with reference to the accompanying drawings, elaborate on some embodiments of the present application. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0057] It is worth noting that in the following description of directions, Figure 11 the up and down directions therein are the up and down directions of the optical module, Figure 11 the left and right width directions of are the left and right width directions of the optical module, Figure 11 the direction from the paper surface to the outside is the front, and the direction from the paper surface to the inside is the back.

[0058] Figure 1 It is a schematic diagram of the light rays of the existing lighting system hitting the surface of the cut-off line forming structure 2.

[0059] Among them, after the light rays emitted from the middle of the light source 1 hit the surface of the cut-off line forming structure 2 and are reflected and deflected at a large angle, they cannot hit the middle of the light-transmitting component 3 or cannot enter the light-transmitting component 3. In particular, the luminous power of the low beam light source itself is low, and after being reflected and deflected at a large angle by the surface of the cut-off line forming structure, the brightness in the middle of the formed low beam light pattern is even lower, resulting in a large difference in brightness between the low beam light pattern and the high beam light pattern, and a sudden transition between the high beam light pattern and the low beam light pattern, with an incoherent connection, posing a great safety hazard for night driving.

[0060] Referring to Figures 2 - 4 , the present application provides an optical module, including:

[0061] Light source;

[0062] A condensing module, including a condensing surface and a light-emitting surface, the condensing surface is arranged close to the light source; the light-emitting surface is arranged away from the light source and includes a low-beam light-emitting surface 121 and a high-beam light-emitting surface 321 arranged vertically;

[0063] A light-shielding plate 500 is arranged on the light-emitting side of the condenser away from the light source and its height is in the middle in the vertical direction of the condensing module. A cut-off line forming structure 510 extending in the front-rear direction (convex upward) is arranged in the middle of the width direction of the light-shielding plate 500;

[0064] Wherein, the cross-section of the cut-off line forming structure 510 includes a first inclined section AB, a horizontal section BC, and a second inclined section CD arranged and connected in sequence from the middle to one side. Taking the center of the light-emitting surface of the condensing module as the origin, the horizontal line passing through the origin as the X-axis, and the vertical line passing through the origin as the Y-axis, the coordinates of both ends of the horizontal section BC are B(0, 0.57) and C(k, 0.57) respectively. The included angle ∠ABC between the first inclined section AB and the horizontal section BC is 135°. The angle range α of the included angle ∠BCD between the second inclined section CD and the horizontal section BC is greater than or equal to 160° and less than 180°; wherein, the range of k is 2.5 - 3.5;

[0065] A lens 600 is arranged on the side of the light-shielding plate 500 away from the condensing module for collimating the light emitted by the condensing module.

[0066] Specifically, the light emitted by the light source after being lit is converged by the condensing module, passes through the light-shielding plate 500 forward and enters the lens 600. Most of the light emitted from the upper low-beam light-emitting surface 121 passes through the front end of the cut-off line forming structure 510 and then passes through the lens 600, and then a low-beam light pattern located lower will be formed in the distance. Since the condensing module makes the image of the light source upside down in the vertical and horizontal directions during condensing, the low-beam bright-dark cut-off line is at the upper edge of the low-beam light pattern; the light emitted from the lower high-beam light-emitting surface 321 passes through the front end of the cut-off line forming structure 510 and then passes through the lens 600, and then a high-beam light pattern located higher will be formed in the distance; the low-beam bright-dark cut-off line is between the low-beam light pattern and the high-beam light pattern (such as Figure 6 ).

[0067] In this embodiment, the angle ∠ABC between the first inclined section AB closer to the center of the light-emitting surface and the horizontal section is 135°. The angle range α of the angle ∠BCD of the second inclined section CD farther from the center of the light-emitting surface is greater than or equal to 160° and less than 180°. ∠BCD is close to a flat angle, that is, the inclination degree of the second inclined section CD is large. Such a design makes most of the light rays emitted from the positions directly behind the second inclined section CD on the low-beam light-emitting surface 121 and the high-beam light-emitting surface 321 not contact the surface where the second inclined section CD is located, so as to directly skim over the cut-off line and enter the middle area of the lens 600; at the same time, for the part of the light rays that can hit the surface where the second inclined section CD is located, the angle with the surface of the second inclined section CD is also very small and basically parallel to the surface of the second inclined section CD. After the light path is slightly changed by the surface of the second inclined section CD, it will still enter the middle area of the lens 600 and finally hit the distant screen and be effectively utilized to hit the middle area of the lens 600.

[0068] This application can prevent the light rays emitted by the light condensing module from being reflected and deflected at a large angle by the cut-off line forming structure 510 and then unable to hit the middle of the lens 600 or enter the lens. Specifically:

[0069] (1) It can make the light rays emitted by the light condensing module skim over the groove of the cut-off line forming structure 510 as much as possible, have less contact with the surface of the cut-off line forming structure 510, or only have the light path slightly changed by the surface of the second inclined section CD of the cut-off line forming structure 510, so that the light rays emitted by the light condensing module are effectively utilized to hit the middle area of the lens 600. The connection part in the middle of the low beam and the high beam has a large enough brightness, and there will be no unclear dark area at the connection part; moreover, the light rays skimming over the groove of the cut-off line forming structure 510 or the light rays with the light path slightly changed by the surface of the second inclined section CD of the cut-off line forming structure 510 will basically continue to be emitted forward. After passing through the front end of the cut-off line forming structure 510, a distinct contour (low-beam cut-off line) will be displayed in the middle of the upper edge of the low-beam light pattern on the distant screen. The contour line is clear and well-defined. The first inclined section AB is close to the center of the light-emitting surface, and the luminous brightness at the center of the light-emitting surface is relatively large. Therefore, the ∠ABC of the first inclined section AB is 135°, and the inclination degree is smaller than that of the second inclined section CD, which is sufficient to ensure that the brightness at the central position corresponding to this part on the screen light pattern is sufficient.

[0070] (2) Moreover, the range of k is between 2.5 and 3.5, that is, the distance between BC is small, and the overall width of the cut-off line forming structure 510 in the left-right direction is small, reducing the spatial volume of the middle area at the connection of the low beam and the high beam, which is beneficial to presenting a large light brightness and a clear low-beam cut-off line.

[0071] Therefore, the present application can increase the brightness at the junction of the low beam and the high beam and make the boundary clear. In particular, it can enhance the brightness in the middle region of the low beam light pattern, reduce the difference in brightness between the middle of the low beam light pattern and the middle of the high beam light pattern, and make the intensity transition in the middle region of the light more smooth, and the connection between the low beam and the high beam more coherent, thereby improving the safety of night driving.

[0072] It should be noted that due to the anti-concentration of the light-concentrating module, the up-down and left-right shapes of the cross-section of the low beam bright-dark cut-off line formed on the screen are exactly reversed from those of the cut-off line forming structure 510. As Figure 5 , the formed low beam bright-dark cut-off line is similar to a groove. Taking the center of the screen as the origin O', the H line as the abscissa, and the V line as the ordinate, the coordinates of both ends of the groove bottom of the groove cross-section are b(0, -0.57) and c(-k, -0.57). The angle ∠abc between the first groove wall ab closer to the center of the screen and the groove bottom is 135°, and the angle range α' of the angle ∠bcd of the second groove wall cd farther from the center of the screen is 160° - 180°.

[0073] In view of the regulatory requirements, the volume sizes of the optical modules used in different vehicles vary greatly. Therefore, the unit of each point coordinate described in the present application is not limited and can be understood as a numerical ratio.

[0074] As Figures 7 - 8 , in some embodiments, the angle α between the second inclined section CD and the horizontal section BC, ∠BCD, is 170°, and k = 3.5.

[0075] In this embodiment, the angle α of ∠BCD of the second inclined section CD farther from the center of the light-emitting surface is 170°, and k = 3.5 (the coordinate of point C is C(3.5, 0.57)). Such a design enables the light rays emitted from the parts directly behind the second inclined section CD on the low beam light-emitting surface 121 and the high beam light-emitting surface 321 to directly skim over the surface of the cut-off line forming structure 510 and vertically enter the middle region of the lens 600, and finally all hit the distant screen and are utilized to form a clear cut-off line. After actual testing, as Figure 9 , the brightness at the middle connection of the low beam and the high beam is high, and the cut-off line is clear and distinct. When the angle α of ∠BCD of the second inclined section CD is designed too large, the shape of the cut-off line is too straight and the distinguishability from the low beam and high beam patterns is not great. When the value of k is less than 3.5, the width of the middle region of the cut-off line in the left-right direction is too small, which will increase the recognition difficulty.

[0076] The light patterns of vehicle headlights mainly include low beam and high beam. During the use of vehicle headlights, the driver needs to change the light patterns of the headlights in real time according to different road conditions and vehicle conditions to meet the requirements of safe driving. According to the relevant standards of vehicle headlights, there is an important component called "Zone III" in the low beam light pattern. It is located above the low beam cut-off line and mainly illuminates objects such as road signs above the road surface, enabling the driver to obtain information such as road signs.

[0077] Currently, the methods for the vehicle lighting optical mechanism to achieve the light pattern of low beam Zone III mainly include: modifying the structure of vehicle lighting optical components (such as lenses), or presenting the light pattern of low beam Zone III by using the reflection surfaces on components such as reflection elements and lens brackets inside the vehicle headlights. However, the existing technical solutions still have defects such as unappealing appearance, low integration of the optical structure, and large tolerances.

[0078] Therefore, as Figures 10 - 12 , in some embodiments, a Zone III forming structure 200 is also integrally formed on the light-emitting surface of the light condensing module. The Zone III forming structure 200 is located at a position between the low beam light-emitting surface 121 and the high beam light-emitting surface 321;

[0079] In the width direction of the optical module, the position of the Zone III forming structure 200 is basically the same as the position of the cut-off line forming structure 510, and the height of the Zone III forming structure 200 is lower than the height of the cut-off line forming structure 510.

[0080] Specifically, most of the light rays emitted from the upper low beam light-emitting surface 121 will form a low beam bright-dark cut-off line in the distance after passing through the cut-off line forming structure 510; at the same time, the light rays emitted from the middle and lower part of the low beam light-emitting surface 121 are emitted forward from the narrow space (this narrow space is in the high beam dimming area) below the cut-off line forming structure 510 after passing through the Zone III forming structure 200, and form a low beam Zone III light pattern above the low beam bright-dark cut-off line in the distance (the area above the entire low beam bright-dark cut-off line is the high beam light pattern area). This low beam Zone III light pattern can illuminate objects such as road signs above the road surface, enabling the driver to obtain information such as road signs.

[0081] This embodiment has the following advantages:

[0082] Both the Zone III forming structure 200 and the cut-off line forming structure 510 are located in the middle of the optical module in the width direction, and the height of the Zone III forming structure 200 is lower than that of the cut-off line forming structure 510. Therefore, a narrow area below the cut-off line forming structure 510 (this narrow area is in the high beam dimming area) can be used to form the light pattern of Zone III: it can make part of the low beam form the low beam light pattern of Zone III at the lower part of the high beam light pattern on the distant screen, and does not affect the normal presentation of the high beam light pattern (when in the high beam mode, the light emitted from the lower high beam light-emitting surface 321 forms the high beam light pattern above the low beam bright-dark cut-off line in the distance. Since the area of the low beam light pattern of Zone III in this application is small and the brightness is moderate, it will not affect the high beam light pattern).

[0083] Adopting the above technical solution, in this application, the Zone III structure is integrated on the condenser module, reducing the part and assembly tolerances brought by adding additional parts, and ensuring the optical accuracy; since no other parts need to be separately provided, the cost is saved;

[0084] Since the Zone III structure is integrated on the condenser module, compared with the case where the Zone III structure is made on the lens 600 or other parts, the aesthetics of the optical module is ensured. Thus, the defects of the existing technical solutions such as poor appearance, low integration degree of the optical structure, low tolerance accuracy, and high cost are solved.

[0085] The light emitted by the Zone III forming structure 200 forms the low beam light pattern of Zone III at the lower part of the high beam light pattern. Therefore, the light emitted by the Zone III forming structure 200 can increase the light brightness in the middle of the connection between the high beam and the low beam, further improving the light pattern at the connection between the high beam and the low beam, making the connection clearer, and the cut-off line clear and distinct.

[0086] Such as Figure 12 , in some embodiments, the cut-off line forming structure 510 includes a groove extending in the front-rear direction, the opening of the groove faces downward, and the projection of the Zone III forming structure 200 on the light-emitting surface falls within the projection groove formed by the projection of the groove on the light-emitting surface.

[0087] Specifically, the low beam emitted from the middle part below the low beam light-emitting surface 121 just enters the narrow space below the cut-off line forming structure 510 (this narrow space is in the high beam dimming area) after being emitted by the Zone III forming structure 200 and is emitted forward to form the low beam light pattern of Zone III in the distance.

[0088] In this embodiment, since the structure 200 formed in the third region is located within the projection groove formed by the molding groove on the light-emitting surface, at this time, the light-emitting surface 211 of the third region is also within the projection groove formed by the molding groove on the light-emitting surface. The low beam light emitted from the light-emitting surface 211 of the third region formed by the structure 200 in the third region just completely enters the molding groove and exits forward along the molding groove, and finally exits from the lens 600. This can not only prevent the cross-sectional area of the light-emitting surface 211 of the third region from being too large or the light-emitting surface 211 of the third region from being offset and misaligned with the molding groove, resulting in some light being unable to enter the molding groove and generating stray light, but also ensure that sufficient light enters the molding groove to form a low beam light pattern with sufficient brightness in the third region.

[0089] As Figures 11 - 13 , in some embodiments, the light source includes a low beam light source 110 and a high beam light source 310 arranged at intervals up and down. The light condensing module includes a low beam condenser 120 and a high beam condenser 320 arranged up and down. The low beam condenser 120 is arranged in front of the low beam light source 110, and the high beam condenser 320 is arranged in front of the high beam light source 310;

[0090] The structure 200 formed in the third region is located in the middle and lower part of the low beam light-emitting surface 121 of the low beam condenser 120, and the light-emitting surface 211 of the third region of the structure 200 formed in the third region is directly opposite to the rear end of the molding groove in the front-rear direction.

[0091] When the low beam is lit, the low beam light rays near the middle and lower part are converged and reflected by the rear end of the low beam condenser 120 and then emitted from the light-emitting surface 211 of the third region of the low beam third region structure, and finally form a low beam light pattern in the third region after passing through the narrow space (this narrow space is in the high beam dimming area) below the cut-off line forming structure 510 of the light shielding plate 500 and exiting from the lens 600.

[0092] The fact that the light-emitting surface 211 of the third region is directly opposite to the rear end of the molding groove in the front-rear direction can ensure that the low beam light rays emitted from the light-emitting surface 211 of the third region enter the molding groove of the cut-off line forming structure 510, and the light efficiency of the low beam light pattern in the third region is good.

[0093] As Figure 12 , in some embodiments, the structure 200 formed in the third region includes a light guide body 210 extending in the front-rear direction. The rear end of the light guide body 210 is connected to the low beam light-emitting surface 121, and the front end of the light guide body 210 is the light-emitting surface 211 of the third region;

[0094] The light-emitting surface 211 of the third region extends forward and is close to / abuts against the rear end of the molding groove, and the distance dimension between the light-emitting surface 211 of the third region and the low beam light source 110 in the front-rear direction is greater than the distance dimension between the low beam light-emitting surface 121 and the low beam light source 110 in the front-rear direction.

[0095] Specifically, the light guide 210 can direct the low beam light entering it to emit entirely from the light-emitting surface 211 of zone III, and can also prevent the low beam light used to form zone III from scattering into the external space, which may cause the light pattern of zone III not to be formed.

[0096] The light-emitting surface 211 of zone III extends forward and approaches / fits against the rear end of the groove, which can reduce the leakage of the light emitted from the light-emitting surface 211 of zone III. The emitted light will enter the groove of the cut-off line forming structure 510 as much as possible and be emitted forward, improving the light utilization rate. The low beam light-emitting surface 121 is located more rearward relative to the light-emitting surface 211 of zone III. The light emitted from the low beam light-emitting surface 121 and converging at the front end of the light shield 500 is also more rearward, that is, the position of the low beam focus is more rearward. The light shield 500 and the lens 600 can thus be placed more rearward, which is beneficial to shortening the size of the entire optical module in the front-rear direction.

[0097] Such as Figure 12 , in some embodiments, the light-emitting surface 211 of zone III of the light guide 210 is connected to the rear end of the groove, and the extending length direction of the light guide 210 faces directly forward and is consistent with the length direction of the groove.

[0098] Specifically, when the light-emitting surface 211 of zone III extends forward and is completely connected to the rear end of the groove, there is no gap between the light-emitting surface 211 of zone III and the rear end of the groove. At this time, the light emitted from the light-emitting surface 211 of zone III will all travel forward along the groove without any light leaking from the gap between the light-emitting surface 211 of zone III and the rear end of the groove. The emitted light will project forward through the groove of the cut-off line forming structure 510 as much as possible, improving the light utilization rate.

[0099] Specifically, the extending length direction of the light guide 210 and the length direction of the groove both face directly forward. The low beam light emitted from the light-emitting surface 211 of zone III formed by the zone III forming structure just exits forward along the groove and finally emits from the lens, avoiding the formation of stray light when the extending direction of the light guide 210 is obliquely forward or the light obliquely exiting and hitting the groove wall surface of the groove, which may prevent the formation of the low beam zone III light pattern projection in the distance.

[0100] Furthermore, the cross-sectional profile shape of the light-emitting surface 211 of zone III of the light guide 210 is consistent with the cross-sectional shape of the groove. This is more conducive to forming the low beam zone III light pattern at the lower part of the high beam light pattern and making the lower boundary of the formed low beam zone III light pattern clearer. The lower boundary of the low beam zone III light pattern just falls on the low beam cut-off line, which can further improve the brightness at the junction of the high and low beams and make the cut-off line at the junction of the high and low beams clearer and more distinct.

[0101] Such as Figure 12, in some embodiments, the low-beam light collector 120's low-beam light-emitting surface 121 is behind the high-beam light collector 320's high-beam light-emitting surface 321, and a stepped plane 400 is formed between the low-beam light-emitting surface 121 and the high-beam light-emitting surface 321.

[0102] Specifically, since the low beam needs to be focused at the front edge of the light shield 500 to form a low-beam cut-off line in the distance, while the high beam does not need to be focused, the high-beam light-emitting surface 321 can be set as far forward as possible, and the brightness and clarity of the finally emitted high-beam light pattern are also higher. A stepped plane 400 is formed between the low-beam light-emitting surface 121 and the high-beam light-emitting surface 321. The low-beam light-emitting surface 121 and the high-beam light-emitting surface 321 are integrally formed, avoiding the part tolerances brought by separate assembly, and can improve the optical precision; the integral formation can reduce the number of mounting brackets, save costs, and the structure is simple and beautiful.

[0103] Such as Figure 12 and Figure 13 , in some embodiments, the light guide 210 is laid on the stepped plane 400, and the distance between the light-emitting surface 211 of the third area and the high-beam light-emitting surface 321 in the front-back direction is less than the distance between the light-emitting surface 211 of the third area and the low-beam light-emitting surface 121 in the front-back direction.

[0104] Specifically, since the high-beam light-emitting surface 321 is more forward than the low-beam light-emitting surface 121 (equivalent to being closer to the rear end of the light shield 500), the distance between the light-emitting surface 211 of the third area and the high-beam light-emitting surface 321 in the front-back direction is closer. The formed stepped plane 400 provides a separate and stable placement platform for the light guide 210 extending from the low-beam light-emitting surface 121 to the high-beam light-emitting surface 321, avoiding light pattern jitter caused by unstable installation, and also avoiding separately adding mounting brackets.

[0105] Such as Figure 11 , in some embodiments, the third area forming structure 200 includes a patterned diffusion surface.

[0106] Specifically, the light-emitting surface 211 of the third area forming structure 200 can adopt a diffusion structure surface with patterns, which is beneficial to diffusing the emitted light, and the brightness of each part of the low-beam third area light pattern presented is uniform.

[0107] Such as Figure 11 , in some embodiments, the patterned diffusion surface includes a plurality of vertical stripes arranged side by side in the left-right direction, and the outer contour of the patterned diffusion surface is square. Specifically, the vertical stripes are beneficial to the diffusion of light in the width direction, thereby expanding the light pattern width of the low-beam third area light pattern; the outer contour of the patterned diffusion surface is square, which can limit the boundary of the low-beam third area light pattern and avoid the formation of stray light by outward diffusion.

[0108] The present application also discloses a vehicle lamp, including the optical module described in any of the embodiments.

[0109] The present application also discloses a vehicle, including the vehicle lamp in the foregoing embodiments. The above vehicle can be an automobile, a train, a high-speed train, or other vehicles that require vehicle lamps.

[0110] The foregoing are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

[0111] For those skilled in the art, it is obvious that the present application is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present application is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be construed as limiting the claimed rights.

Claims

1. An optical module, characterized in that: include: light source; A light focusing module, comprising a light focusing surface and a light emitting surface, wherein the light focusing surface is arranged close to the light source; the light emitting surface is arranged away from the light source and comprises a low beam light emitting surface and a high beam light emitting surface arranged up and down; A shading plate is provided on the light-emitting side of the light-concentrating module away from the light source and at a height located in the middle of the light-concentrating module in the vertical direction, and a cut-off line forming structure extending in the front-rear direction is provided in the middle of the width direction of the shading plate; The cross section of the cutoff line forming structure includes a first inclined segment AB, a horizontal segment BC, and a second inclined segment CD which are sequentially arranged and connected from the middle to one side, with the center of the light emitting surface of the focusing module as the origin, the horizontal line passing through the origin as the X-axis, and the vertical line passing through the origin as the Y-axis. The coordinates of the two ends of the horizontal segment BC are B(0, 0.57) and C(k, 0.57), respectively. The angle ∠ABC between the first inclined segment AB and the horizontal segment BC is 135°, and the angle range α between the second inclined segment CD and the horizontal segment BC is greater than or equal to 160° and less than 180°; wherein the range of k is 2.5-3.5; The lens is arranged on a side of the shading plate away from the focusing module and is used for collimating the light emitted by the focusing module.

2. The optical module according to claim 1, characterized in that: The included angle α of the second inclined section CD and the horizontal section BC is ∠BCD, which is 170°, and k=3.

5.

3. The optical module according to claim 1, characterized in that: A zone III forming structure is also integrally formed on the light emitting surface of the focusing module, and the zone III forming structure is located between the low beam light emitting surface and the high beam light emitting surface; along the width direction of the optical module, the spatial position of the zone III forming structure is basically consistent with the position of the cut-off line forming structure, and the height of the zone III forming structure is lower than the height of the cut-off line forming structure.

4. The optical module according to claim 3, characterized in that: The cut-off line forming structure includes a profile groove extending in the front-rear direction, the profile groove opens downward, and the projection of the zone III forming structure on the light emitting surface falls within a projection groove formed by the profile groove on the light emitting surface.

5. The optical module according to claim 4, characterized in that: The light source comprises a low-beam light source and a high-beam light source which are arranged in an upper and lower interval; the focusing module comprises a low-beam focusing device and a high-beam focusing device which are arranged in an upper and lower position; the low-beam focusing device is arranged in front of the low-beam light source; and the high-beam focusing device is arranged in front of the high-beam light source; The zone III forming structure is located at the lower middle part of the low beam light emitting surface of the low beam concentrator, and the zone III light emitting surface of the zone III forming structure is directly opposite to the rear end of the groove in the front-rear direction.

6. The optical module according to claim 5, characterized in that: The zone III forming structure includes a light guide extending in the front-to-back direction, the rear end of the light guide is connected to the low beam light emitting surface, and the front end of the light guide is the zone III light emitting surface; The zone III light emitting surface extends forward and is close to / fits with the rear end of the groove, and the distance between the zone III light emitting surface and the low beam light source in the front-to-back direction is greater than the distance between the zone III light emitting surface and the low beam light source in the front-to-back direction.

7. The optical module according to claim 6, characterized in that: The light emitting surface of zone III of the light guide is connected to the rear end of the groove, and the extending length direction of the light guide faces straight ahead and is consistent with the length direction of the groove.

8. The optical module according to claim 6, characterized in that: The cross-sectional profile shape of the light emitting surface of zone III of the light guide is consistent with the cross-sectional shape of the groove.

9. The optical module according to claim 6, characterized in that: The low beam light emitting surface of the low beam concentrator is located behind the high beam light emitting surface of the high beam concentrator, and a stepped plane is formed between the low beam light emitting surface and the high beam light emitting surface; The light guide is laid on the stepped plane, and the distance between the zone III light emitting surface and the high beam light emitting surface in the front-to-back direction is smaller than the distance between the zone III light emitting surface and the low beam light emitting surface in the front-to-back direction.

10. A vehicle lamp, characterized in that: An optical module comprising any one of claims 1-9.

11. A means of transport, characterized in that: The vehicle lamp comprising the vehicle lamp according to claim 10.

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